The commercial HIBP services are provided by a fully automated, self-service model with pre-defined tiers based on requests per minute for email address searches and the number of breached accounts on a domain for domain-level searches. HIBP is run by a small team with extremely limited resources and for the most part, we're dependent on organisations using the automated subscription tools.
If your organisation is in the education sector or is a non-profit, you can submit a request with the domain(s) within your remit, and we'll do our best to manually review how best to support you.